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A230800 as a simple table

n a(n)
1 0
2 2
3 2
4 16
5 34
6 154
7 432
8 1618
9 5058
10 17664
11 57586
12 195866
13 648928
14 2185122
15 7284482
16 24435056
17 81651394
18 273490714
19 914714512
20 3062116338
21 10245066178
22 34289257824
23 114738331026
24 383986878106
25 1284957453248
26 4300144520002

[0,2,2,16,34,154,432,1618,5058,17664,57586,195866,
 648928,2185122,7284482,24435056,81651394,
 273490714,914714512,3062116338,10245066178,
 34289257824,114738331026,383986878106,
 1284957453248,4300144520002]

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Last modified May 1 14:59 EDT 2024. Contains 372174 sequences. (Running on oeis4.)